Reversal of single-domain magnetic nanoparticles induced by pulsed magnetic fields

2008 ◽  
Vol 103 (7) ◽  
pp. 07F502 ◽  
Author(s):  
Haiwen Xi ◽  
Kai-Zhong Gao ◽  
Song Xue
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Single Domain ◽  
Pulsed Magnetic Fields

scholarly journals Larmor Precession and Debye Relaxation of Single-Domain Magnetic Nanoparticles

2014 ◽  
Vol 2014 ◽  
pp. 1-10
Author(s):  
Zs. Jánosfalvi ◽  
J. Hakl ◽  
P. F. de Châtel
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Analytical Solutions ◽  
Power Dissipation ◽  
Single Domain ◽  
Larmor Precession ◽  
Qualitative Comparison ◽  
Debye Relaxation ◽  
Linearly Polarized ◽  
Exponential Relaxation

The numerous phenomenological equations used in the study of the behaviour of single-domain magnetic nanoparticles are described and some issues clarified by means of qualitative comparison. To enable a quantitativeapplicationof the model based on the Debye (exponential) relaxation and the torque driving the Larmor precession, we present analytical solutions for the steady states in presence of circularly and linearly polarized AC magnetic fields. Using the exact analytical solutions, we can confirm the insight that underlies Rosensweig’s introduction of the “chord” susceptibility for an approximate calculation of the losses. As an important consequence, it can also explain experiments, where power dissipation for both fields was found to be identical in “root mean square” sense. We also find that this approximation provides satisfactory numerical accuracy only up to magnetic fields for which the argument of the Langevin function reaches the value 2.8.

Precessional dynamics of single-domain magnetic nanoparticles driven by small ac magnetic fields

2006 ◽  
Vol 39 (22) ◽  
pp. 4746-4752 ◽  
Author(s):  
Haiwen Xi ◽  
Kai-Zhong Gao ◽  
Yiming Shi ◽  
Song Xue
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Single Domain

scholarly journals Transient response of single-domain Y-Ba-Cu-O rings to pulsed magnetic fields

2003 ◽  
Vol 13 (2) ◽  
pp. 3750-3754 ◽  
Author(s):  
T.R. Askew ◽  
J.M. Weber ◽  
Y.S. Cha ◽  
H. Claus ◽  
B.W. Veal
Keyword(s):  
Magnetic Fields ◽  
Transient Response ◽  
Single Domain ◽  
Pulsed Magnetic Fields

Magnetic Nanoparticles Synergize with Pulsed Magnetic Fields to Stimulate Osteogenesis In Vitro

2020 ◽  
Author(s):  
Mohamed Habib ◽  
Devante A. Horne ◽  
Khaled Hussein ◽  
Dezba Coughlin ◽  
Erik I. Waldorff ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Pulsed Magnetic Fields ◽  
Osteogenesis In Vitro

scholarly journals High-resolution calorimetry in pulsed magnetic fields

2021 ◽  
Vol 92 (4) ◽  
pp. 043901
Author(s):  
Shusaku Imajo ◽  
Chao Dong ◽  
Akira Matsuo ◽  
Koichi Kindo ◽  
Yoshimitsu Kohama
Keyword(s):  
High Resolution ◽  
Magnetic Fields ◽  
Pulsed Magnetic Fields
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